LS ELECTRIC SV-iS7 Series, Руководство пользователя

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Learning Advanced Features
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247
Code Description
2 KEB-2
If input power failure occurs, the inverter output frequency is
controlled and the regeneration energy from the motor is
charged by the inverter. The motor decelerates and stops
when the power is supplied again, using the deceleration
time set at DRV-04 (Dec Time).
CON-78
KEB Start Lev,
CON-79
KEB Stop Lev
Sets the start and stop points of the kinetic energy buffering operation. The set
values must be based on the low voltage trip level at 100%, and the stop level
(CON-79) must be set higher than the start level (CON-78).
CON-86
KEB P Gain
Used to maintain the voltage during the kinetic energy buffering operation. It
operates the inverter by modifying the set value to prevent malfunctions
caused by low voltage after power interruptions.
CON-87
KEB I Gain
Used to maintain the voltage during the kinetic energy buffering operation.
Sets the gain value to maintain the operation until the frequency stops during
the kinetic energy buffering operation.
CON-88
KEB Slip Gain Used to prevent malfunctions caused by low voltage from initial kinetic energy
buffering occurring due to power interruptions.
CON-89
KEB Acc Time Sets the acceleration time for the frequency reference when the inverter’s
operation becomes normal after the kinetic energy buffering operation.
IN-65 – 75 Px
Define
Sets a multi-function input Px to “ 50 (KEB-1 Select) ” .
If the terminal is on during an operation, the inverter operates in KEB-1 mode.
The inverter output frequency is controlled to the output level set at CON-78
and the regeneration energy from the motor is charged by the inverter.
Normal operation is resumed when the power is supplied again, using the
acceleration time set at CON-89 (KEB Acc Time).
If the terminal is not on, KEB operation does not start when the input power
failure occurs.
If a multi-function terminal is set to
“ 50 (KEB-1 Select) ” , KEB operation is
available via terminal input only. Set CON-77 to “ 0 (none) ” in this case.